package com.lagou.config;

import org.springframework.web.WebApplicationInitializer;
import org.springframework.web.context.support.AnnotationConfigWebApplicationContext;
import org.springframework.web.servlet.DispatcherServlet;

import javax.servlet.ServletContext;
import javax.servlet.ServletRegistration;

/**
 * @author DingYiYuan
 * @description MyWebApplicationInitializer
 * @time 2021/4/25 20:27
 */
public class MyWebApplicationInitializer implements WebApplicationInitializer {

    @Override
    public void onStartup(ServletContext servletContext) {

        //通过注解的方式初始化Spring的上下文
        AnnotationConfigWebApplicationContext ac = new AnnotationConfigWebApplicationContext();
        //注册spring的配置类
        ac.register(AppConfig.class);
        ac.refresh();

        //基于java代码的方式初始化DispatcherServlet
        DispatcherServlet servlet = new DispatcherServlet(ac);
        ServletRegistration.Dynamic registration = servletContext.addServlet("springboot", servlet);
        registration.setLoadOnStartup(1);
        registration.addMapping("/springboot/*");
    }
}
